Changing the Ignition Coil

[Ed in Maine]

I should have paid attention to the connections on the coil before I took it off the car. The old and new coils do not have the spot welded bracket.
The coil is screwed tightly to the bracket. The new coil is marked Positive (+) and Negative (-). Which terminal on the coil should the red wire coming from the ignition switch out of the terminal box be connected to on the coil? Thanks for your help, Ed